v3.25.3
Document And Entity Information
Oct. 10, 2025
Document Information [Line Items]  
Entity, Registrant Name OMEROS CORPORATION
Document, Type 8-K
Document, Period End Date Oct. 10, 2025
Entity, Incorporation, State or Country Code WA
Entity, File Number 001-34475
Entity, Tax Identification Number 91-1663741
Entity, Address, Address Line One 201 Elliott Avenue West
Entity, Address, City or Town Seattle
Entity, Address, State or Province WA
Entity, Address, Postal Zip Code 98119
City Area Code 206
Local Phone Number 676-5000
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common stock
Trading Symbol OMER
Security Exchange Name NASDAQ
Entity, Emerging Growth Company false
Amendment Flag false
Entity, Central Index Key 0001285819